Stop motion



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STOP MOTION 2 SheetsShee Filed Jan. 21, 1955 QM nb U .1 6 mm r W O O mam w BB W M Tim. h 05 b June 3, 19 F. J. BAUMANN ETAL STOP MOTION 2 Sheets-Shee 2 Filed Jan. 21, 1955 lnven tofs:

Frank J. Baumann h WM The iT w w w m PM m B 1% AWUA United States Patent STOP MOTION Frank J. Baumann and Joseph M. Bloomfield, Cleveland, Ohio, assignors to Industrial Rayon Corporation, Cleveland, Ohio, a corporation of Delaware Application January 21, 1955, Serial No. 483,367

Claims. (Cl. 242-37) This invention relates to a stop motion for a friction drive thread winding machine.

Winding machines having reciprocating thread distributing traverse guides and friction roller or drum drives for rotating the packages during their formation are commonly employed for taking up or collecting twisted and untwisted thread, yarn and like strandular material into wound packages. Flangeless or headless packages of thread or yarn, sometimes characterized as cheeses, which are supported on fiangeless spools, or cylindrical tubes, are often wound with machines of this type.

It is advantageous to provide stop motions for thread winding machines in order to promptly interrupt winding whenever a discontinuity occurs in the thread. The thread may break during winding and willrun out when the supply exhausts to effect a loose end on the packdifficulties may be experienced if the loose end should roll over the package to become entangled and ensnared in various parts of the winding mechanism. For example, a loose end of thread which is caught or wound around the bearings of the package holding assembly in the machine sometimes will cause shut-down of the equipment to correct the situation. Such difliculties are more frequently encountered when winding headless packages, which have no flanges to help maintain thread on the package core, especially when a lively twisted thread is being wound. Loose ends of lively twisted thread have particular propensity for rolling towards and over the end of the package being wound due to the tendency of the thread to untwist.

Multiple position friction drive winding machines ordinarily have common drive shafts for all of the friction rollers in a unit containing a desired plurality of winding positions. Various. stop ,motions which have been devised for such machines to interrupt winding at individual positions in the eventof a thread break or I at run out have sometimes had objectionably complex or unwieldly designs, or are inconvenient to employ with the winding machine since they complicate threading up operations. Many stop motions of this variety, for example, are pneumatically or electrically actuated to remove the package from driving contact with the friction roller whenever a discontinuity in the thread occurs at an individual winding position.

It is the purpose of the present invention to provide a, relatively simple and non-complicating mechanical stop motion for interrupting the winding of thread whenever a discontinuous or loose end occurs at any position of a friction drive winding machine, especially when a plurality of positions in such a machine have a common drive shaft for the friction rollers.

This, advantageously, .is accomplished in accordance with the present invention by driving each friction roller A 2,837,291 Patented June-3, 1958.

and having means associated with the reciprocating traverse guide, operative upon a discontinuity of the gaged by a driving member 33 which is slidably fixedthread through the guide, for disengaging the friction roller drive coupling at any winding position where a loose end occurs.

Other advantages and features of the present invention are apparent in the following description and drawing, which is merely illustrative, wherein:

Figure l, partly in section, is a plan view of a friction roller drive in a winding machine including a stop motion in accordance with the present invention:

Figure 2 is a side elevation of the friction roller in a headless package winder showing the package holding assembly and other parts of the machine;

Figure 3 is a front elevation of the portion of Figure 1 taken along 3-3;

Figure 4 is a front elevation of the traverse guide; and;

Figure 5 is a side sectional elevation of the guide taken along the line 5-5 in Figure 4.

Figures 1 and 2 illustrate a winding position in a headless package winder. For clarity, the package and some of the machine structure, including other similar winding positions which may be employed, are not included in the plan view of Figure l. The winding machine has a traverse guide, indicated generally by the reference numeral 63, which reciprocate within a stroke zone between S and S for distributing thread 64 to a collecting package 14 during winding. The thread 64: is woundinto the rotating package 14 which is peripherally driven by a friction roller, indicated generally by reference numeral 15. A bracket 12 holds the package 14 superposed on the friction roller 15. A package core (not shown) on which the thread is wound into package form is rotatably supported in the bracket 12 which is vertically pivotable in support stands 11 projecting from a horizontal frame rail 10 of the wind-- ing machine. This arrangement permits the package to be lifted upwards out of contact with the friction roller for dofiing, etc. Frequently, a desired plurality of similar winding positions make up a unit in which all of the friction rollers 15 are powered through a common drive shaft. winding machine.

The friction roller 15 is advantageously constructed with a cylindrical roller shell 16 provided with an outer covering 17 of cork, rubber or other material having a suitable coeflicient of friction for rotating the thread package by means of frictional contact.

A pair of bearing assemblies 22 and 26, which advantageously are ball bearings, mount the friction roller 15 about the drive shaft 35. The bearing 22 is fixed, against an inner annular web 18 within the roller 15. by a housing 2% which is secured to the web 18 withscrews 21. A retaining collar 23 held about the shaft As is apparent, the bearing assemblies 22 and 26 through which the friction roller 15 is mounted about the shaft 35 permit rotation of the shaft independent of the roller 15. A drive coupling between the shaft and roller is employed for rotating the roller with the shaft. The member 30 serves both as a housing for the hearing 26 and as the driven member of the coupling, which is a disengagable coupling or clutch, between the roller 15 and the shaft 35. The driven member 30 is enabout the shaft over the key 34 or by other suitable Sometimes several units are contained in a single;

3 means. The faces of the driven member 30 and the driving member 33 are depicted fiat so as to transmit power through frictional contact. However, jaw clutches or other type arrangements may also be suitably employed, if desired. V

The driven and driving members 30 and 33 respec tively may be brought in and out of engagement by a movable shipper lever or clutch lever 36 linked with the driving member 30. The shipper lever 36 is bent along its length to fit under the driving member 33. It is provided with a bracket 37 which is positioned over the driving member 33 in a yoke-like arrangement. The bracket 37 is secured to the shipper lever with fasteners 38 which may be nuts and bolts, as shown, or other suitable means. Link prongs 39 on the shipper lever 36 and bracket 37 engage the driving member 33 in recesses provided therein. The shipper lever extends under the reciprocating traverse guide 63 to clear it While being within its stroke zone between S and S when the members 30 and 33 are in engagement. When the friction roller coupling is disengaged, the shipper lever 36 extends to a position out of the stroke zone of the guide, as depicted by the phantomv outline of the lever in Figure 1.

Conveniently the shipper lever 36 is mounted at a pivot point 40 to the horizontal frame rail 10. A bifurcated pivot bracket 42, fastened to the rail it by a bolt or rivet 45, mounts the shipper lever 36. The shipper lever is fastened at the pivot point 41 with a pivot pin 43 which fits through apertures in the bifurcated portion of the pivot bracket 42 and through an opening near the end of the shipper lever. A cotter pin 44 secures the pivot pin 43. As is apparent, the movement of the shipper lever need not be pivotal to engage and disengage the friction roller coupling. desired for the purpose.

A stop motion is provided when the shipper lever 36 is moved to disengage the driven and driving members 39 and 33. Advantageously, the stop motion functions to avoid thread entanglement with a loose end on the package whenever any discontinuity or loss of thread 64 occurs in the traverse guide 63 due to break or run out. This is accomplished by employing a lever contacting means on the guide 63 operative upon discontinuity of thread through the guide to contact the shipper lever and move it to a coupling disengaging position out of the stroke zone of the guide.

The guide 63, shown also in greater detail in Figures 4 and 5, may advantageously be a modified form of a frequently employed self-threading variety. It comprises a base 67 on which an adjustable guide leg 68 is pivotally mounted about a rivet 79. An adjusting screw 7%, tensioned by a spring '72, is positioned through the adjustable leg 68 and the base 67. The angle of the thread guiding extension leg 65* may be varied to fit various take up conditions by adjusting the screw 70 in the nut 71 which holds it in place. Pivotally mounted about the rivet 79 under the adjustable leg 68 is an arm-like dropper 75 having a thread hook 76 positioned thereon. The thread hook 76 on the dropper arm 75 fits up through an aperture 69 in the adjustable leg 68 of the guide 63. The nuts '77 fasten the threaded end of the hook '76 to the dropper arm 75. The dropper arm 75 swings down to a depending position under the adjustable leg 68 of the guide 63 when it is not maintained up under the leg 63 by thread 64 in the guide which is threaded through the hook 76 on the dropper arm 75.

The guide 63 is positioned on a reciprocating traverse bar 58. The thread rides over a guide rod 59 on the upper side of the traverse bar 58 during reciprocating movement of the bar and guide. The traverse bar 64 is slidably supported at about every third position of the winding machine, or more or less frequently, in a support yoke or hearing 57 mounted on a roll stand 49, one of which also occurs at corresponding intervals along the It may be movable in any suitable manner 4' winding machine. The roll stand 49 is fastened by bolts 50 or other suitable means to a support rail bracket 47 of the winding machine upon which the horizontal frame rail 10 is mounted.

The dropper arm 75, hanging down to a depending position under the guide 63, is adapted to strike the shipper lever and move it with the reciprocating guide when the guide, during its reciprocating stroke, is moving towards the shipper lever. This contact with the moving dropper arm displaces the shipper lever out of the stroke zone of the guide to a position wherein the driven and driving members 30 and 33 of the friction roller power coupling or clutch are disengaged.

. As shown in Figure 3, the shipper lever 36 is held in either a clutch-in or -out position to positively maintain the members 30 and 33 in or out of engagement by means of a positioning spring held by a rivet 56 under a bracket 53 at the extremity of the shipper arm. The bracket is mounted on a support member 52 secured to the roll stand 49 by means of fasteners 54. Such positive positioning means for the shipper lever is desirable to avoid incomplete engagement of the coupling which might occur with lever drifting.

In Operation, the traverse guide 63 is threaded with the thread 64 passing through the book 76 on the dropper arm to hold the dropper arm up under the adjustable leg '68 of the guide. The thread is distributed from the traverse guide to the package '14 in a normal fashion according to the type of wind being employed for the package. Whenever any discontinuity of the thread occurs in the guide due to a break or run out, the dropper arm 75, freed from the restraint of the thread through the book 76, swings down to hang in a depending position under the guide 63. In this position the dropper arm 75' strikes the shipper lever 36 during traversing motion of the guide in the direction of the shipper lever. This moves the shipper lever 36 out of the stroke zone which disengages the driving member 33 from the driven member 39 of the friction roller power coupling. The rotation of the package 14 is thereby stopped to interrupt winding since the friction roller 15 will not be rotated by the drive shaft .35 through the bearings 22 and 26 when the package is resting upon it. With the package at rest, there is little possibility for a loose end to become caught or entangled in the mechanism of the wind ing' machine. The package, if full, may then be doffed or a thread break may be repaired. Winding is resumed by manually resetting the shipper lever 36 to a clutch-in position wherein the friction roller coupling is engaged after passing the thread to be wound through the hook 7-6 in the guide 63 to hold the dropp r arm 75 up under the adjustable leg 68.

Because it is actuated only at the extremity of the guide stroke, the stop motion of. the present invention is more particularly adapted for employment with winding machines having a relatively quick traverse, such as is employed for cross and random winding in headless package and other type winding machines.

Since certain changes, modifications and altered embodiments of apparatus according to the present invention can readily be entered into without substantially departing from its intended spirit or scope, it is to be fully understood that the foregoing is merely illustrative and in no sense or manner limiting or restrictiveof the invention as set-forth and defined inthe appended claims.

What is claimed is:

1. Stop motion for a friction drive thread winding machine having a reciprocating thread guide and a friction roller for rotating the thread package during winding compromising; a drive shaft for said friction roller; bearings mounting said friction roller independently rotatable about said shaft; a disengagable coupling between said shaft and said roller for driving said roller, said coupling having a driven member fixed to said roller and a driving member slidably mounted on said .shaft; a pivotally mounted lever adjacent to said roller linked with the driving member of said coupling and pivotally movable to positions wherein it extends clear of said guide within and without its stroke zone to respectively engage and disengage said coupling; and means in said thread guide, operative upon a discontinuity of thread through the guide, adapted to move said lever to a position out of the stroke zone of said guide wherein the friction roller coupling with said drive shaft is disengaged,

2. Stop motion for a friction drive thread winding machine having a reciprocating thread guide and a friction roller for rotating the thread package during winding comprising; a drive shaft for said friction roller; bearings mounting said friction roller independently rotatable about said shaft; a disengagable coupling between said shaft and said roller for driving said roller, said coupling having a driven member fixed to said roller and a driving member slidably mounted on said shaft; a pivotally mounted lever adjacent to said roller linked with the driving member of said coupling and pivotally movable to positions wherein it extends clear of said guide Within and withoutits stroke zone to respectively engage and disengage said coupling; a lever contacting member on said guide adapted to strike said lever and move it with the reciprocating guide to a position out ofthe stroke zone of said guide to disengage said coupling when said guide is untbreaded; and means in said guide to prevent said lever contacting memher from engaging said lever when said guide is threaded.

3. Stop motion for a friction drive thread winding machine having a reciprocating thread guide and a friction roller for rotating the thread package during winding comprising; a drive shaft for said friction roller; bearings mounting said friction roller independently rotatable about said shaft; a disengageable coupling between said shaft and said roller for driving said roller, said coupling having a driven member fixed to said roller and a driving member slidably mounted on said shaft; a pivotally mounted lever adjacent to said roller linked with the driving member of said coupling and pivotally movable to positions wherein it extends clear of said guide within and without the stroke zone of said guide to respectively engage and disengage said coupling; a lever contacting member mounted pivotally on said guide adapted to depend from said guide when said guide is unthreaded, saidlever contacting member being further adapted to strike said lever and move it with the reciprocating guide to a position out of the stroke zone of said guide to disengage said coupling when said member is depending from said guide; and means in said guide for maintaining said lever contacting member out of a depending position from said guide when said guide is threaded.

4. Stop motion for a friction drive thread winding machine having a reciprocating thread guide and a friction roller for rotating the thread pacakge during winding comprising; a drive shaft for said friction roller; bearings mounting said friction roller independently rotatable about said shaft; a disengagable coupling between said shaft and said roller for driving said roller, said coupling having a driven member fixed to said roller and a driving member slidably mounted on said shaft; a pivotally mounted lever adjacent to said roller linked with the driving member of said coupling and pivotally movable to positions wherein it extends clear of said guide within and without its stroke zone to respectively engage said coupling and disengage a dropper arm mounted pivotally on said guide adapted to depend from said guide when said giude is unthreaded, said dropper arm being further adapted to strike said lever and move it with the reciprocating guide to a position out of the stroke zone of said guide to disengage said coupling when said dropper arm is depending from said guide; and a thread hook on said dropper arm, threadable with thread in said guide, adapted to maintain said dropper arm from depending from said guide when said guide is threaded.

5. Stop motion for a friction drive thread winding machine having a reciprocating thread guide and a friction roller for rotating the thread package during Winding comprising; a drive shaft for said friction roller, bearings mounting said friction roller independently rotatable about said shaft; a disengagable coupling between said shaft and said roller for driving said roller, said coupling having a driven member fixed to said roller and a driving member slidably mounted on said shaft; a pivotally mounted lever adjacent to said roller linked with the driving member of said coupling and pivotally movable to positions wherein it extends under and clear of said guide within and without its stroke zone to respectively engage and disengage said coupling; a thread supporting extension on said guide; an aperture in said extension; a dropper arm mounted pivotably under said extension on said guide, said dropper arm when depending from saidguide, adapted to engage and move said lever to a position out of the stroke zone of said guide to disengage said coupling; and a thread hook on said dropper arm insertable through said aperture in said extension, said thread hook being threadable with thread in said guide to maintain said dropper arm from depending from said guide when said guide is threaded.

References Cited in the file of this patent UNITED STATES PATENTS France Apr. 27, 

